I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
cassenes cassenas cassines caissons cassinas cassinos gassiness cosines cuisines quassins cosiness cozens queasiness caseins casinos gossans coziness gossoons gauziness quiescence
cassenes baseness wiseness tisanes piousness niceness mesnes loosens lessens cosines bassness seines sensa sense sines sones scenes biasness cuisines usneas puisnes osseins missense lysines looseness cassines sanes cassenas caseins hausens essence esnes eosines choiceness
cassena cassene caisson casein cassina cassine cassino